What is the total surface area????!?!?!???!?!

the total surface area is 440 because the triangles total to be 56 cm and the three rectangle total to be 384 so if you add those you get 440 for the SURFACE area
Total surface area = 624 + 56 = 650 cm²
The given prism has 2 triangles and 3 rectangles. we will find the surface area of individuals and then add them
So the area of triangles is (length x height)/2 which will be
Area of triangles = 8 x 7 = 56/2 = 28
Since there are two triangles so 28 x 2 = 56
Now
Area of rectangles is length x width
Area of rectangles= 26 x 8 = 208
Since there are 3 rectangles so 208 x 3 = 624
Total surface area = 624 + 56 = 650 cm²